associations on the slopes of the mountain below the timber 

 are sagebrush grassland types (Artemisia tridentata/Elymus 

 spicatus and A. t./ Stipa comata) . The lower ridge which 

 parallels the mountain to the east is composed of younger 

 sedimentary deposits, including limestones and sandstones, and 

 supports a community of forbs. Elevation ranges from about 

 5,800 to about 7,200 feet. 



METHODS 



Prior to fieldwork, the Biological Conservation Database 

 maintained by the Montana Natural Heritage Program was queried 

 for records of BLM potential sensitive and watch species known 

 from the southern Pioneer Mountains. This study area and the 

 BLM lands in particular are not well known botanically, so the 

 data search was augmented by information on other state 

 species of special concern tracked by the Montana Natural 

 Heritage Program (Heidel and Poole 1993). For purpose of this 

 report, the term "sensitive" will be used loosely in reference 

 to any currently identified or potentially sensitive species. 

 The data search produced records for 19 sites of eight target 

 species including: 



Sapphire rockcress Arabis fecunda 



Jackson's Hole thistle Cirsium subniveum 



Geyer's larkspur Delphinium geyeri 



Wet meadow gentian Gentiana aquatica 



Lemhi beardstongue Penstemon lemhiensis 



Storm saxifrage Saxifraga apetala 



Tufted club-rush Scirpus cespitosus 



undescribed bladderpod Lesquerella sp. novum 



The Arabis,. Cirsium, Delphinium, Lesquerella, and 

 Penstemon were identified as search targets which might 

 potentially inhabit the dry, middle elevation habitats of the 

 study area. Additional targets included species which were 

 encountered by similar surveys of BLM lands in the Tendoy 

 Mountains to the south (Vanderhorst and Lesica 1994) . 



BLM lands on Dutchman Mountain were surveyed for 

 sensitive species on June 19, 20 and 23, 1993. The area was 

 traversed on foot and all habitat types were visited; Appendix 

 A is a map showing principle travel routes. Lists were made 

 of all vascular plant taxa which could be identified. 

 Whenever sensitive species were encountered, estimates were 

 made of population numbers and the area covered was mapped. 

 Notes were taken on habitat, plant characteristics, and 

 potential threats to the populations and standard field survey 

 forms were filled out. Photographs (35 mm slides) were taken 

 of the plants and their habitats. Specimens of some sensitive 

 other species were collected and will be deposited at the 



